Hie Hie no Mi: The Ice Devil Fruit Used by Kuzan “Aokiji” in One Piece

In One Piece, few Devil Fruits are as versatile and visually impressive as the Hie Hie no Mi, the Devil Fruit used by Kuzan, better known by his former Marine codename Aokiji.

The Hie Hie no Mi is a Logia-type Devil Fruit that allows its user to create, control, and transform into ice. In the hands of someone as powerful and experienced as Kuzan, the ability can freeze opponents almost instantly, create gigantic weapons, freeze enormous areas of ocean, and even dramatically alter the environment of an entire island.

Kuzan's mastery of the fruit is one of the major reasons he was considered one of the Marine's greatest powers. Even after leaving the Marines, his Hie Hie no Mi remains one of the most formidable abilities in the One Piece world.

Note: This article focuses on the Hie Hie no Mi and Kuzan's known abilities in the manga and anime. It does not treat unconfirmed fan theories about a possible Devil Fruit awakening as established canon.

What Is the Hie Hie no Mi?

The Japanese name Hie Hie no Mi (ヒエヒエの実) is derived from a Japanese expression associated with being cold or chilly.

The fruit is classified as a Logia, giving Kuzan the ability to create and manipulate ice as well as transform his body into ice. The official ONE PIECE website lists Hie Hie no Mi as Kuzan's Devil Fruit and identifies him as a former Marine Headquarters officer.

In English releases, the fruit has been rendered as Ice-Ice Fruit or Chilly-Chilly Fruit, depending on the localization.

Unlike many elemental Devil Fruits, however, Kuzan's ability is not primarily about producing explosions or destructive projectiles.

Its greatest strength is control.

Kuzan can freeze people, weapons, ships, water, terrain, and enormous sections of the sea.

That makes the Hie Hie no Mi both an offensive and defensive powerhouse.

Kuzan: The Former Admiral Who Mastered Ice

Kuzan was formerly one of the three Admirals of the Marines, using the codename Aokiji, meaning "Blue Pheasant."

The official ONE PIECE character page identifies him as a former Marine Headquarters officer and confirms that his Devil Fruit is the Hie Hie no Mi. It also states that, after the Marineford War, Kuzan fought Sakazuki on Punk Hazard over the position of Fleet Admiral, lost the battle, and subsequently left the Marines.

The fight between Kuzan and Sakazuki lasted ten days.

Its consequences were extraordinary: Punk Hazard was permanently transformed, with one side becoming dominated by ice and the other by volcanic heat. The event demonstrated that the powers of the two former Admirals could affect an island on a massive scale.

This is perhaps the clearest evidence that Kuzan's mastery of the Hie Hie no Mi goes far beyond ordinary ice manipulation.

How Does the Hie Hie no Mi Work?

The Hie Hie no Mi provides Kuzan with three fundamental capabilities.

Creating Ice

Kuzan can generate enormous amounts of ice from his body and use it to create weapons, barriers, projectiles, and environmental structures.

Controlling Ice

Once created, the ice can be shaped into different forms depending on what Kuzan needs during combat.

Transforming Into Ice

As a Logia user, Kuzan can turn his body into ice. This allows him to survive attacks that do not properly counter his Devil Fruit, while also letting him reshape his body after damage. Because ice is a solid rather than a fluid element, however, his Logia defense works somewhat differently from abilities such as smoke, fire, or light.

This combination gives Kuzan extraordinary flexibility.

Can Kuzan Freeze the Ocean?

Absolutely—and this is one of the most impressive abilities of the Hie Hie no Mi.

Kuzan can rapidly freeze enormous areas of seawater and create a solid surface across the ocean.

His Ice Age technique is the best example.

By making contact with the water, Kuzan can instantly freeze a massive section of the sea. The resulting ice can stretch for miles and remain solid for an extended period. The technique was originally demonstrated when Kuzan froze a huge section of ocean so that Tonjit and Shelly could travel across it.

This ability also gives Kuzan an unusual way to deal with one of the biggest weaknesses shared by Devil Fruit users.

Normally, a Devil Fruit user who falls into the sea becomes helpless.

Kuzan can simply freeze the water before he sinks.

That makes him exceptionally capable of operating around the ocean compared with many other Devil Fruit users.

Ice Age: Kuzan's Most Iconic Technique

Ice Age is arguably the signature technique of the Hie Hie no Mi.

Kuzan places his hand into a large body of water and releases his freezing power across the surrounding area.

The result can be enormous.

At Marineford, Kuzan used his power on a much greater scale, freezing the huge waves created by Whitebeard's earthquake-powered attack. The ice effectively transformed the battlefield and stopped the pirate fleet from being immediately overwhelmed by the sea.

This demonstrates an important characteristic of the Hie Hie no Mi:

Kuzan isn't limited to freezing individual targets. He can freeze the environment itself.

Ice Time: Freezing an Opponent Instantly

One of Kuzan's most frightening abilities is Ice Time.

With direct contact, Kuzan can freeze a target's body into a solid ice statue.

This was famously demonstrated against Nico Robin when Kuzan first appeared in the story. The official anime page for Episode 228 explicitly describes Kuzan using the Hie Hie no Mi to freeze Robin's entire body in an instant.

The technique can be extremely dangerous because the frozen victim becomes physically fragile.

A powerful impact can shatter the ice, potentially causing catastrophic injuries.

However, One Piece has also shown that victims can survive the freezing process if the ice is removed carefully and quickly enough.

This makes Ice Time more than a simple attack.

It is effectively a battlefield immobilization technique.

Ice Time Capsule

Another interesting technique is Ice Time Capsule.

Instead of requiring Kuzan to make direct contact with a person, the technique sends a wave of freezing power along the ground.

Everything caught by the advancing ice can become frozen.

The technique is especially important because of its connection to Jaguar D. Saul and the Ohara flashback.

Saul survived Kuzan's attack because the freezing effect allowed him to remain alive rather than simply being killed outright. Decades later, Saul's survival became an important revelation in the story.

The name "Ice Time Capsule" is particularly appropriate because the technique effectively placed Saul in a frozen state for years.

Ice Block: Partisan

Kuzan's Devil Fruit isn't restricted to freezing.

He can also turn ice into deadly weapons.

Ice Block: Partisan allows Kuzan to create multiple ice spears and launch them toward an enemy.

This technique was famously used during the Marineford War against Whitebeard. Kuzan can use these weapons to extend his attack range and avoid relying exclusively on physical contact.

The technique demonstrates how Kuzan balances two different aspects of his Devil Fruit:

freezing and immobilization at close range, and weaponized ice for long-range attacks.

Ice Saber

Kuzan can also create a sword made entirely of ice.

This technique, known as Ice Saber, produces a large, hardened ice blade capable of clashing with conventional weapons.

When Kuzan first demonstrated the technique, he used it against the Straw Hat Pirates, with Zoro and Sanji intervening to stop the attack against Robin. Later, Kuzan demonstrated that he could produce the weapon without needing to first freeze an external object.

The technique shows that Kuzan can use the Hie Hie no Mi to imitate traditional weapons rather than relying solely on elemental attacks.

Ice Ball

Another powerful technique is Ice Ball.

Kuzan can surround a target with a mass of ice and attempt to freeze them completely.

He used this technique against Whitebeard during the Marineford War, but Whitebeard's tremendous vibration powers were able to shatter the ice before Kuzan could completely immobilize him.

This moment is important because it demonstrates that even an exceptionally powerful Devil Fruit has limits.

Strong abilities, Haki, and other Devil Fruit powers can still resist or counter Kuzan's freezing techniques.

Ice Block: Pheasant Beak

The "Blue Pheasant" theme associated with Aokiji also appears in his Devil Fruit techniques.

Ice Block: Pheasant Beak creates a large projectile of ice in the shape of a bird and sends it toward the target.

The technique is particularly recognizable because it resembles a gigantic frozen version of Kuzan's Marine codename, Aokiji—the Blue Pheasant.

It is another example of how Oda incorporates character symbolism into Devil Fruit abilities.

Kuzan Can Fight Without Completely Freezing His Opponent

One misconception about the Hie Hie no Mi is that Kuzan's only strategy is to freeze enemies solid.

In reality, he has many different approaches.

He can:

• Create ice weapons.
• Freeze terrain.
• Freeze the sea.
• Launch ice projectiles.
• Form defensive structures.
• Transform parts of his body.
• Freeze an opponent through direct contact.
• Fight using physical attacks enhanced by ice.

This versatility is one reason the Hie Hie no Mi is considered one of the most dangerous Logia abilities in the series

The Hie Hie no Mi and Marineford

The Marineford War provided one of the greatest demonstrations of Kuzan's abilities.

Whitebeard created enormous tsunamis using the Gura Gura no Mi, threatening to overwhelm Marineford.

Kuzan responded by freezing the massive waves.

The result was an enormous frozen battlefield.

His ability to instantly convert huge quantities of seawater into ice gave the Marines an important strategic advantage and demonstrated that his Devil Fruit could operate on a battlefield-wide scale.

This is one of the moments that established the difference between Kuzan and an ordinary ice-based fighter.

He isn't simply throwing ice.

He changes the battlefield itself.

Hie Hie no Mi vs. Fire

Ice naturally has an interesting relationship with fire in the One Piece world.

Kuzan's ice was shown clashing with Portgas D. Ace's Mera Mera no Mi abilities. The two elemental powers can counteract one another rather than one automatically overpowering the other in every situation.

However, the matchup depends on the users involved.

Devil Fruit battles in One Piece are not determined solely by elemental compatibility. Physical power, Haki, experience, technique, and circumstances all matter.

That is especially important when discussing Kuzan because his Devil Fruit is backed by enormous combat experience.

Hie Hie no Mi vs. Magu Magu no Mi

One of the most important matchups involving Kuzan is his battle against Sakazuki (Akainu).

Sakazuki's Magu Magu no Mi produces magma, while Kuzan's Hie Hie no Mi produces ice.

Their opposing elemental abilities became the basis of their legendary battle on Punk Hazard.

After fighting for ten days over the Fleet Admiral position, Sakazuki emerged victorious, while Kuzan left the Marines. The battle permanently changed the climate of Punk Hazard, leaving one half frozen and the other dominated by volcanic heat.

The battle illustrates something important about the Hie Hie no Mi:

Kuzan's ice is powerful enough to oppose one of the most destructive Logia abilities in the series for ten straight days.

Even though he ultimately lost, the scale of the fight speaks volumes about his strength.

Can Kuzan Be Hit While Using the Hie Hie no Mi?

Yes.

This is one of the unusual aspects of the Hie Hie no Mi.

Unlike Logia abilities based on fluid or gaseous substances, ice is solid.

As a result, Kuzan's elemental body can be physically struck in certain circumstances.

However, this does not make him easy to defeat.

Kuzan can break apart his frozen body and reform it, meaning ordinary attacks may still fail to cause meaningful damage. He can also manipulate the shape of his ice body to avoid some attacks.

And, like other powerful Devil Fruit users, Kuzan can also use Haki.

During the Hachinosu events, the anime showed Kuzan directly confronting his former mentor, Garp, demonstrating that his abilities remain formidable even after leaving the Marines.

Can the Hie Hie no Mi Be Awakened?

As of the currently available canon, a confirmed Hie Hie no Mi Awakening has not been explicitly revealed.

This is an important point because fans have long speculated about what an awakened version might look like.

Possible theories include:

• Permanently freezing large portions of an island.
• Turning surrounding terrain into ice.
• Creating an enormous frozen battlefield automatically.
• Producing ice on a scale even greater than Ice Age.

But these are fan theories, not established abilities.

Interestingly, Kuzan and Sakazuki's battle on Punk Hazard already provides an example of extraordinarily large-scale environmental effects, even without an officially confirmed Awakening.

Kuzan's Ice Has Uses Beyond Combat

One of the best details about the Hie Hie no Mi is that Kuzan doesn't use it only for fighting.

He can use ice for transportation.

Kuzan is capable of freezing a path across the ocean and traveling over it, including using his bicycle along frozen seawater.

This is particularly clever because it allows him to travel across areas that would normally be inaccessible to a Devil Fruit user.

His Devil Fruit is therefore useful for:

Combat

Defense

Transportation

Battlefield control

Immobilization

Environmental manipulation

That versatility makes it one of the most practical Logia powers in the series.

Why the Hie Hie no Mi Is So Powerful

The greatest strength of the Hie Hie no Mi isn't simply "ice."

It is scale and versatility.

Kuzan can freeze a human being.

He can freeze a giant.

He can freeze a Sea Beast.

He can freeze enormous sections of the ocean.

He can create weapons.

He can freeze an opponent remotely with certain techniques.

And at the highest level, his ability can influence the climate of an entire island when combined with an extended battle against another top-tier Devil Fruit user.

Few Devil Fruits offer that many applications.

 

Hie Hie no Mi: Strengths and Weaknesses

Strength	Explanation
Massive freezing power	Kuzan can freeze enormous areas of water and terrain.
Excellent crowd control	He can immobilize multiple enemies and large targets.
Long-range attacks	Ice spears and other constructs allow ranged combat.
Environmental control	He can reshape the battlefield with ice.
Defense	His body can become ice and reform after damage.
Transportation	He can create frozen paths across the ocean.
Weapon creation	He can produce swords, spears, and other ice constructs.
Major weakness	He remains subject to standard Devil Fruit weaknesses and can be challenged by sufficiently powerful Haki and opposing abilities.

These characteristics make the Hie Hie no Mi far more than a conventional "ice power."

 

Hie Hie no Mi: One of One Piece's Best Logia Fruits?

It is certainly a strong contender.

The Hie Hie no Mi combines several qualities that make a Devil Fruit dangerous:

Raw power: Kuzan can freeze massive areas.

Versatility: The fruit can be used offensively, defensively, and for transportation.

Range: Kuzan can fight at both close and long distances.

Battlefield control: Ice can completely change the terrain.

Synergy with Haki: Kuzan can combine his Devil Fruit abilities with physical attacks and Haki.

Most importantly, the fruit's effectiveness is amplified by the person using it.

The Hie Hie no Mi in the hands of an inexperienced fighter would be dangerous.

In the hands of Kuzan, it becomes something much more terrifying.

Final Thoughts

The Hie Hie no Mi is one of the most remarkable Devil Fruits in One Piece.

Its ability to create, control, and transform into ice gives Kuzan an enormous range of options. He can freeze opponents instantly, create weapons, immobilize large groups, freeze the ocean, reshape battlefields, and even use his power as a method of transportation.

Its greatest demonstration came during the Marineford War, where Kuzan froze Whitebeard's gigantic tsunami attacks, and later on Punk Hazard, where his ten-day battle against Sakazuki permanently altered the island's climate.

What makes the Hie Hie no Mi especially interesting is that its power is not based solely on destruction.

Kuzan controls movement, terrain, temperature, and even the battlefield itself.

That makes the Hie Hie no Mi one of the most versatile Logia Devil Fruits in the One Piece universe—and one of the clearest examples of how a Devil Fruit becomes truly terrifying when placed in the hands of a master.

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